So I bought a Opteka 650-1300mm lens for play enough though I heard they are crap. Here is one of my first moon shots:
You can click on the image to see the full-size version at SmugMug.
I'm going to try a few more over the next few nights. If I can't get anything really sharp I'll sell the Opteka and try again with a better zoom and teleconverter I suppose.